Manual and automatic switching control mechanism

Abstract

The utility model relates to manual and automatic switching control mechanism, including transmission shaft, automatic drive mechanism and manual drive mechanism, transmission shaft is provided with the clutch device that can slide along its axial direction, clutch device includes the sleeve that radial limit is on transmission shaft, the both ends of sleeve are equipped with the automatic connection end for with automatic drive mechanism transmission connection and the manual connection end for with manual drive mechanism transmission connection, transmission connection is carried out with automatic drive mechanism or manual drive mechanism selectively through the sleeve axial sliding, the utility model's purpose lies in, provide a kind of to provide manual and automatic switching control mechanism, it can be driven by manual handle, and it can be driven by driving motor, realize the driving purpose of manual and electric integral, effectively expand the application range of louvered fan, solve the technical problem that existing louvered fan can continue to use under the condition of power failure or unstable power supply while maintaining the automation advantage.

Description

Technical Field

[0001] This utility model belongs to the technical field of outdoor sunshade products, and in particular relates to a manual and automatic switching control mechanism. Background Technology

[0002] Awnings are a common type of outdoor sunshade device. Awnings generally consist of a frame formed by crossbeams, multiple louvers movably mounted within the frame, and a power mechanism that drives the louvers to open and close. Existing awning power mechanisms can be divided into two types: traditional manual drive structures and automated electric drive structures. Electric drive mechanisms offer advantages such as ease of operation and high automation, significantly improving efficiency and user experience. However, this type of structure also has inherent limitations, particularly in the event of a power outage or unstable power supply, where it cannot function properly, thus affecting the reliability and emergency use capability of the awning. On the other hand, while traditional manual drive mechanisms do not rely on electricity and possess basic emergency operation functions, they are often less convenient and less efficient in daily use. Utility Model Content

[0003] The purpose of this invention is to provide a manual and automatic switching control mechanism to solve the technical problem that existing louvered awnings can continue to be used in the event of power outages or unstable power supply while maintaining the advantages of automation.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a manual and automatic switching control mechanism, including a transmission shaft, an automatic drive mechanism, and a manual drive mechanism. The transmission shaft is provided with a clutch device that can slide along its axial direction. The clutch device includes a sleeve that is radially limited on the transmission shaft. The two ends of the sleeve are respectively provided with an automatic connection end for transmission connection with the automatic drive mechanism and a manual connection end for transmission connection with the manual drive mechanism. By axially sliding the sleeve, the transmission connection with the automatic drive mechanism or the manual drive mechanism can be selectively established.

[0005] Preferably, the drive shaft is rotatably mounted inside a crossbeam for driving louvers disposed in the crossbeam. The surface of the drive shaft is machined with a long keyway, and the sleeve is provided with a connecting key that mates with the long keyway. The sleeve and the drive shaft achieve axial relative sliding and circumferential torque transmission through the engagement of the key and the long keyway.

[0006] Preferably, the automatic drive mechanism includes a drive motor installed in the crossbeam, the output end of the drive motor is equipped with a drive gear, the automatic connection end is a driven gear provided on the sleeve, the driven gear meshes with the drive gear to realize automatic control transmission, and the manual drive mechanism includes a mounting base fixedly installed at the drive hole at the bottom of the crossbeam, a manual control component is movably arranged in the mounting base, and a positioning component for longitudinally limiting the manual control component is provided on the mounting base.

[0007] Preferably, the automatic drive mechanism includes a drive motor installed in the crossbeam, the output end of the drive motor is equipped with a drive gear, the automatic connection end is a driven gear disposed on one side of the sleeve, the driven gear moves axially along the transmission shaft by the push of the sleeve to mesh or disengage with the drive gear, and the manual drive mechanism includes an internal transmission mechanism, and the internal transmission mechanism and the transmission shaft are connected by a lever.

[0008] Preferably, the manual control assembly includes a connecting plate that extends movably out of the mounting base, the connecting plate being connected to a gear shaft and a guide portion, the gear shaft and the guide portion passing through a through hole opened inside the mounting base and extending into the interior of the crossbeam.

[0009] Preferably, the gear shaft is rotatably connected to the connecting plate and rotatably disposed within the mounting base. One end of the gear shaft is provided with a bevel gear, the manual connection end is a bevel tooth surface that mates with the bevel gear, and the end of the gear shaft away from the bevel gear is provided with a handle connection for connecting a handle.

[0010] Preferably, the guide portion includes push rods arranged side by side on one side of the gear shaft, and a first guide block is provided at the end of the push rod away from the connecting plate. The first guide block has an inclined structure and a positioning bead is formed at its end.

[0011] Preferably, an annular groove is provided between the automatic connection end and the manual connection end of the sleeve, and a second guide block is provided on one side of the annular groove to cooperate with the first guide block. By pushing the first guide block, the sleeve is driven to generate axial displacement by the interaction between its inclined surface and the inclined surface on the second guide block. During the cooperation movement of the first guide block and the second guide block, the positioning bead is inserted into the annular groove to achieve positioning.

[0012] Preferably, the drive shaft is rotatably mounted inside the crossbeam via several bearing seats, and an abutment portion is provided on one side of the sleeve. A return spring is provided between the sleeve and the abutment portion, and the return spring is sleeved on the drive shaft.

[0013] Preferably, the positioning component includes spring retaining balls disposed on both sides of the mounting base, and the connecting plate is provided with a limiting groove that matches the spring retaining balls.

[0014] Through the above technical solution, compared with the prior art, this utility model has the following beneficial effects: By setting a clutch device on the transmission shaft, and controlling the axial movement of the clutch device on the transmission shaft to connect with the automatic drive mechanism and the manual drive mechanism respectively, the switching between manual and automatic modes is realized; specifically, in the automatic mode, under the action of the return spring, the sleeve is usually pushed towards the automatic drive mechanism side. At this time, the automatic connection end of the sleeve is engaged with the drive gear of the automatic drive mechanism. When the drive motor starts, the drive motor drives the drive gear to rotate. Since the drive gear and the driven gear on the sleeve are engaged, the... The drive sleeve rotates, transmitting force to the drive shaft that mates with its keyway, causing it to rotate as well. The drive shaft then controls the electric opening and closing of the louvers. To switch to manual mode, the handle is first inserted into the handle connection at the end of the gear shaft that rotatably connects to the connecting plate. Then, the connecting plate is pushed upwards, causing the push rod and the first guide block to move inwards. The inclined surface of the first guide block contacts the inclined surface of the second guide block on the sleeve, creating relative motion. This inclined surface mechanism converts the axial tension of the manual component into an axial thrust on the sleeve, overcoming the spring force of the return spring and pushing the manual connection end of the sleeve towards the manual drive mechanism. During this process, the automatic connection end of the sleeve disengages from the drive gear, while the bevel gear surface of its manual connection end engages with the bevel gear at the gear shaft end of the manual drive mechanism. When the sleeve slides into position, the positioning bead at the end of the push rod engages in the annular groove of the sleeve under spring force, achieving longitudinal limiting and preventing the sleeve from accidentally disengaging during manual operation. Meanwhile, the spring-loaded balls on both sides of the mounting base engage with the limiting slots of the connecting plate, achieving lateral limiting of the entire manual assembly and ensuring its stability during operation. After switching, turning the handle will drive the gear shaft to rotate. Since the bevel gear on the gear shaft meshes with the bevel teeth of the sleeve, it will drive the sleeve to rotate, thereby rotating the drive shaft to achieve manual drive of the louvers.

[0015] To restore automatic mode, simply pull out the handle, causing the manual component's connecting plate to push outwards. The positioning bead disengages from the annular groove, and the sleeve automatically slides back to the automatic drive mechanism side under the action of the return spring, re-engaging with the drive gear. Simultaneously, the manual connection end disengages from the bevel gear.

[0016] The above structure provides a manual and automatic switching control mechanism, which can be driven by a manual handle or a drive motor, achieving the purpose of integrated manual and electric drive. This effectively expands the application range of louvered awnings and solves the technical problem of existing louvered awnings being able to continue to be used in the event of power outages or unstable power supply while maintaining the advantages of automation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the crossbeam in the first embodiment of this utility model; Figure 3 This is a schematic diagram of the automatic connection end and the automatic drive mechanism in a separated state according to the first embodiment of this utility model; Figure 4 This is a schematic diagram of the connection state structure between the manual connection end and the manual drive mechanism in the first embodiment of this utility model; Figure 5 For the present utility model Figure 3 Enlarged view of a portion; Figure 6 This is a schematic diagram of the overall structure of the second embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the crossbeam in the second embodiment of this utility model; Figure 8 This is a schematic diagram of the automatic connection end and the automatic drive mechanism in a separated state according to the second embodiment of this utility model; The utility model reference information is as follows: 1. Crossbeam; 3. Louver; 5. Drive shaft; 6. Clutch device; 7. Drive motor; 601. Sleeve; 602. Automatic connection end; 603. Manual connection end; 605. Mounting base; 606. Connecting plate; 607. Gear shaft; 608. Guide part; 609. Bevel gear; 611. Handle connection; 612. Push rod; 613. First guide block; 614. Positioning ball; 615. Second guide block; 616. Bearing seat; 617. Abutment part; 618. Return spring; 619. Handle; 620. Annular groove; 621. Driven gear; 622. Upper pulley; 623. Foot tube; 624. Lower pulley; 625. Hand lever; 701. Drive gear; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figure 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] like Figure 1-5The first embodiment of this utility model is shown: a manual / automatic switching control mechanism, including a drive shaft 5, an automatic drive mechanism, and a manual drive mechanism. A clutch device 6, which can slide axially along the drive shaft 5, is provided on the drive shaft 5. The clutch device includes a sleeve 601 radially limited on the drive shaft 5. The sleeve 601 can rotate synchronously with the drive shaft 5 and also slide axially along the drive shaft 5. The sleeve 601 has an automatic connection end 602 for transmission connection with the automatic drive mechanism and a manual connection end 603 for transmission connection with the manual drive mechanism, respectively. The automatic connection end 602 and the manual connection end 603 are integrally formed, and the sleeve 601 is axially slidably connected to either the automatic drive mechanism or the manual drive mechanism for transmission connection.

[0023] The above method achieves the physical connection and disconnection between manual and automatic drive sources through an axially sliding clutch sleeve. The switching process is rapid and reliable, ensuring that users can immediately activate the backup manual mode in the event of a power outage or motor failure, greatly improving the product's reliability and emergency response capabilities.

[0024] like Figure 1-2 As shown: The drive shaft 5 is rotatably mounted inside a crossbeam 1 to drive the louvers 3 set in the crossbeam 1. The surface of the drive shaft 5 is machined with a long keyway. The long keyway is opened along the axial direction of the drive shaft 5, and multiple long keyways can be set along its outer circumference to increase the stability of the transmission. The sleeve 601 is provided with a connecting key that matches the long keyway. The shape of the connecting key matches the long keyway and is integrally formed on the inner wall of the sleeve 601. The sleeve 601 and the drive shaft 5 are connected by the key and the long keyway. When the sleeve 601 is fixed on the drive shaft 5, the connecting key is engaged in the long keyway to realize axial relative sliding and circumferential torque transmission.

[0025] like Figure 2-5 As shown: The automatic drive mechanism includes a drive motor 7 installed in the crossbeam 1. The crossbeam 1 has a mounting base for fixing the drive motor 7. The output end of the drive motor 7 is equipped with a drive gear 701. The automatic connection end 602 is a driven tooth provided on the sleeve 601. In this embodiment, the driven tooth is integrally formed on the outer surface of the right end of the sleeve 601. The driven tooth meshes with the drive gear 701 to realize automatic control transmission.

[0026] like Figure 3-5As shown: The manual drive mechanism includes a mounting base 605 fixedly installed at the drive hole at the bottom of the crossbeam 1. The mounting base 605 serves to support the manual control component and provide space for its movement. The manual control component is movably installed within the mounting base 605. The functions of the manual control component are: 1. to push the sleeve 601 to move, thereby separating the driven gear from the driving gear 701; 2. to push the gear shaft 607 to move so that it meshes with the bevel gear surface on the sleeve 601 to achieve manual operation. The mounting base 605 is provided with a positioning component for longitudinally limiting the manual control component. The positioning component functions to lock the gear shaft 607 immediately when it moves to the position where it meshes with the bevel gear surface, thereby increasing stability.

[0027] like Figure 3-5 As shown: The manual control component includes a connecting plate 606 that extends movably out of the mounting base 605. An inner groove is formed on the mounting base 605, and the connecting plate 606 moves within the inner groove. In the automatic state, the connecting plate 606 is abutted against the lower part of the inner groove, and in the manual state, the connecting plate 606 is pushed to the upper part of the inner groove. A gear shaft 607 and a guide part 608 are connected to the connecting plate 606. The gear shaft 607 and the guide part 608 pass through a through hole opened inside the mounting base 605 and extend into the interior of the crossbeam 1.

[0028] like Figure 3-5 As shown: The gear shaft 607 is rotatably connected to the connecting plate 606 and rotatably mounted in the mounting base 605. One end of the gear shaft 607 is provided with a bevel gear 609, and the manual connection end 603 is a bevel tooth surface that mates with the bevel gear 609. The end of the gear shaft 607 away from the bevel gear 609 is provided with a handle connection 611 for connecting the handle 619. In this embodiment, the gear shaft 607 can move accordingly with the up and down movement of the connecting plate 606. At the same time, the gear shaft 607 is rotatably mounted on the connecting plate 606 through bearings and other connecting parts. This design is to facilitate the rotation of the handle 619 when it is connected to the gear shaft 607, thereby controlling the rotation of the bevel gear 609. The handle connection 611 is a connecting block integrally formed at the end of the gear shaft 607. The connecting block has an inner groove that matches the handle 619, generally a hexagonal inner groove or a square inner groove. The cross-section of the handle 619 is generally hexagonal or square to facilitate transmission.

[0029] In addition, the bevel tooth surface is integrally formed on the sleeve 601, so that the driven tooth and the bevel tooth surface are both integrated on the sleeve 601.

[0030] like Figure 5As shown: The guide part 608 includes a push rod 612 arranged side by side on one side of the gear shaft 607. The end of the push rod 612 away from the connecting plate 606 is provided with a first guide block 613, wherein the first guide block 613 protrudes from the gear shaft 607 so as to first contact the second guide block 615 of the sleeve 601 and play a guiding role. The first guide block 613 has a bevel structure and a positioning bead 614 is formed at its end.

[0031] like Figure 5 As shown: An annular groove 620 is provided between the automatic connection end 602 and the manual connection end 603 of the sleeve 601. A spring retainer can be provided on the inner wall of the annular groove 620 to cooperate with the positioning bead 614 for limiting. A second guide block 615 is provided on one side of the annular groove 620 to cooperate with the first guide block 613. The first guide block 613 and the second guide block 615 form a triangle and can fit together. By pushing the first guide block 613, the inclined surface of the first guide block 613 interacts with the inclined surface of the second guide block 615 to drive the sleeve 601 to generate axial displacement. During the cooperation movement of the first guide block 613 and the second guide block 615, the positioning bead 614 is locked into the annular groove 620 to achieve positioning.

[0032] Furthermore, the positioning bead and the annular groove 620 are designed to cooperate to provide clear tactile feedback when the manual mode is switched to the correct position, allowing the user to clearly perceive that the switch is successful and avoiding incomplete or excessive engagement.

[0033] like Figure 2-4 As shown: The drive shaft 5 is rotatably mounted inside the crossbeam 1 via several bearing seats 616. A contact portion 617 is provided on one side of the sleeve 601, which is fixed in the crossbeam 1 and has a slot for the drive shaft 5 to pass through. A return spring 618 is provided between the sleeve 601 and the contact portion 617, and is sleeved on the drive shaft 5. The return spring enables automatic reset from manual mode to automatic mode. The user only needs to pull out the handle, and the mechanism will automatically return to the electric standby state under the spring force, requiring no additional steps and making operation extremely convenient.

[0034] like Figure 3-4 As shown: The positioning component includes spring retaining balls on both sides of the mounting base 605. The connecting plate 606 is provided with a limiting groove that matches the spring retaining balls. The longitudinal positioning of the connecting plate 606 can be achieved through the cooperation of the spring retaining balls and the limiting groove, so that the operation is stable and does not shake, improving the feel and safety of manual operation. This positioning component is existing technology and will not be described in detail here.

[0035] The operation process of this embodiment is as follows: By installing a clutch device on the transmission shaft, and controlling the axial movement of the clutch device on the transmission shaft 5 to connect with the automatic drive mechanism and the manual drive mechanism respectively, the manual and automatic mode switching can be achieved. Specifically, in the automatic mode, under the action of the return spring 618, the sleeve 601 is usually pushed towards the automatic drive mechanism side. At this time, the automatic connection end 602 of the sleeve 601 is engaged with the drive gear of the automatic drive mechanism. When the drive motor 7 starts, the drive motor 7 drives the drive gear 701 to rotate. Since the drive gear 701 and the driven teeth on the sleeve 601 are engaged, the sleeve 601 is driven to rotate. The sleeve 601 then transmits the force to the transmission shaft 5, which is engaged with its keyway. The louvers are rotated and the electric opening and closing of the blades is controlled by the drive shaft 5. When switching to manual mode, the handle 619 is first inserted into the handle connection 611 at the end of the gear shaft 607, which is rotatably connected to the connecting plate 606. Then, the connecting plate 606 is pushed upward, which drives the push rod 612 and the first guide block 613 on it to move inward. The inclined surface of the first guide block 613 contacts the inclined surface of the second guide block 615 on the sleeve 601 and generates relative movement. This inclined surface mechanism converts the axial tension of the manual component into the axial thrust of the sleeve 601, overcoming the elastic force of the return spring 618 and pushing the manual connection end 603 of the sleeve 601 to slide towards the manual drive mechanism. During this process, the automatic connection end 602 of the sleeve 601 disengages from the drive gear 701, while the bevel gear surface of its manual connection end 603 engages with the bevel gear 609 at the gear shaft end in the manual drive mechanism. When the slide reaches its position, the positioning ball at the end of the push rod 612 engages with the annular groove 620 of the sleeve under the action of the spring force, achieving longitudinal limitation and preventing the sleeve from accidentally disengaging during manual operation. Simultaneously, the spring-loaded balls on both sides of the mounting base engage with the limiting slots of the connecting plate, achieving lateral limitation of the entire manual assembly and ensuring its stability during operation. After switching, rotating the handle will drive the gear shaft to rotate. Since the bevel gear on the gear shaft meshes with the bevel gear surface of the sleeve, it will drive the sleeve to rotate, thereby rotating the drive shaft to achieve manual drive of the louvers.

[0036] like Figure 6-8The second embodiment of this utility model is shown below: The difference between this embodiment and the first embodiment is that the automatic drive mechanism includes a drive motor 7 installed in the crossbeam 1. The output end of the drive motor 7 is equipped with a driving gear 701. The automatic connection end 602 is a driven gear 621 disposed on one side of the sleeve 601. The driven gear 621 can move synchronously with the transmission shaft 5 through a keyway engagement and can move axially along the transmission shaft 5. The driven gear 621 moves axially along the transmission shaft 5 by the push of the sleeve 601 to mesh or disengage with the driving gear 701. In this embodiment, the transmission shaft 5... The sleeve 601 has a transmission gear in the middle position, and an internal helical gear that meshes with the transmission gear is provided inside the sleeve 601. The driven gear 621 abuts against one side of the sleeve 601. The internal transmission mechanism in the manual drive mechanism includes an upper pulley 622 sleeved on the transmission shaft 5 and a lower pulley 624 installed in the foot tube 623 below the crossbeam 1. A drive hole is opened on the foot tube 623 on the side corresponding to the lower pulley 624. The drive hole is used to insert a lever 625. The upper pulley 622 and the lower pulley 624 are connected by a lever 625 to drive the transmission shaft 5 to rotate, thereby realizing manual control. The internal transmission mechanism can also be a bevel gear rod and a bevel gear set on the transmission shaft 5. The transmission engagement between the bevel gear rod and the bevel gear drives the transmission shaft 5 to rotate.

[0037] The drive shaft 5 is rotatably mounted in the crossbeam 1 via several bearing seats 616. A contact part 617 is provided on one side of the sleeve 601. A return spring 618 is provided between the sleeve 601 and the contact part 617. The return spring 618 is sleeved on the drive shaft 5.

[0038] The operation process of this embodiment is as follows: First, the lever 625 is inserted into the lower pulley 624, which is fixedly installed in the bearing seat. The lower pulley 624 has a drive hole that matches one end of the lever 625. When the lever 625 is inserted into the drive hole, it can drive the lower pulley 624 to rotate. Since the lower pulley 624 and the upper pulley 622 are connected by a conveyor belt, and the upper pulley 622 is connected to the drive shaft 5 through a keyway and can drive the drive shaft 5 to rotate, the lever 625 can rotate. This drives the drive shaft 5 to rotate. When the drive shaft 5 rotates, the sleeve 601 moves axially along the drive shaft 5 through the cooperation of the transmission gear and the internal helical gear, and pushes the driven gear 621 set on one side of it, so that it gradually disengages from the driving gear 701, and simultaneously compresses the return spring 618 to realize the switching between manual and automatic modes. When it is necessary to switch back to automatic mode, simply reverse the lever 625 to retract the sleeve 601. At this time, the return spring 618 pushes the driven gear 621 to the driving gear 701 to realize the automatic mode.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A manual / automatic switching control mechanism, comprising a drive shaft (5), an automatic drive mechanism, and a manual drive mechanism, characterized in that: The drive shaft (5) is provided with a clutch device (6) that can slide along its axial direction. The clutch device includes a sleeve (601) that is radially limited on the drive shaft (5). The two ends of the sleeve (601) are respectively provided with an automatic connection end (602) for transmission connection with the automatic drive mechanism and a manual connection end (603) for transmission connection with the manual drive mechanism. By sliding the sleeve (601) axially, the drive shaft (601) can be selectively connected to the automatic drive mechanism or the manual drive mechanism.

2. The manual / automatic switching control mechanism according to claim 1, characterized in that: The drive shaft (5) is rotatably mounted inside a crossbeam (1) for driving the louvers (3) set in the crossbeam (1). The drive shaft (5) has a long keyway machined on its surface. The sleeve (601) is provided with a key that cooperates with the long keyway. The sleeve (601) and the drive shaft (5) achieve axial relative sliding and circumferential torque transmission through the cooperation of the key and the long keyway.

3. The manual / automatic switching control mechanism according to claim 2, characterized in that: The automatic drive mechanism includes a drive motor (7) installed in the crossbeam (1), the output end of the drive motor (7) is equipped with a drive gear (701), the automatic connection end (602) is a driven gear provided on the sleeve (601), the driven gear meshes with the drive gear (701) to realize automatic control transmission, the manual drive mechanism includes a mounting base (605) fixedly installed at the drive hole at the bottom of the crossbeam (1), a manual control component is movably arranged in the mounting base (605), and a positioning component for longitudinally limiting the manual control component is provided on the mounting base (605).

4. The manual / automatic switching control mechanism according to claim 2, characterized in that: The automatic drive mechanism includes a drive motor (7) installed in the crossbeam (1). The output end of the drive motor (7) is equipped with a drive gear (701). The automatic connection end (602) is a driven gear (621) located on one side of the sleeve (601). The driven gear (621) moves axially along the transmission shaft (5) by the push of the sleeve (601) to mesh or separate from the drive gear (701). The manual drive mechanism includes an internal transmission mechanism, and the internal transmission mechanism and the transmission shaft (5) are connected by a lever (625).

5. The manual / automatic switching control mechanism according to claim 3, characterized in that: The manual control assembly includes a connecting plate (606) that extends movably out of the mounting base (605), on which a gear shaft (607) and a guide (608) are connected, the gear shaft (607) and the guide (608) passing through a through hole opened inside the mounting base (605) and extending into the interior of the crossbeam (1).

6. The manual / automatic switching control mechanism according to claim 5, characterized in that: The gear shaft (607) is rotatably connected to the connecting plate (606) and rotatably disposed in the mounting base (605). One end of the gear shaft (607) is provided with a bevel gear (609). The manual connection end (603) is a bevel tooth surface that cooperates with the bevel gear (609). The end of the gear shaft (607) away from the bevel gear (609) is provided with a handle connection point (611) for connecting the handle (619).

7. The manual / automatic switching control mechanism according to claim 5, characterized in that: The guide part (608) includes a push rod (612) arranged side by side on one side of the gear shaft (607). The end of the push rod (612) away from the connecting plate (606) is provided with a first guide block (613). The first guide block (613) has an inclined structure and a positioning bead (614) is formed at its end.

8. The manual / automatic switching control mechanism according to claim 7, characterized in that: An annular groove (620) is provided between the automatic connection end (602) and the manual connection end (603) of the sleeve (601). A second guide block (615) is provided on one side of the annular groove (620) to cooperate with the first guide block (613). By pushing the first guide block (613), the sleeve (601) is driven to generate axial displacement by the interaction between its inclined surface and the inclined surface on the second guide block (615). During the cooperation movement of the first guide block (613) and the second guide block (615), the positioning bead (614) is inserted into the annular groove (620) to achieve positioning.

9. The manual / automatic switching control mechanism according to any one of claims 2-8, characterized in that: The drive shaft (5) is rotatably mounted in the crossbeam (1) through several bearing seats (616). A contact part (617) is provided on one side of the sleeve (601). A return spring (618) is provided between the sleeve (601) and the contact part (617). The return spring (618) is sleeved on the drive shaft (5).

10. The manual / automatic switching control mechanism according to claim 5, characterized in that: The positioning component includes spring retaining balls disposed on both sides of the mounting base (605), and the connecting plate (606) is provided with a limiting groove that matches the spring retaining balls.

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